79. Найдите частное: 1) \(9 : \frac{3}{7};\) 3) \(\frac{9}{32} : 18;\) 5) \(2\frac{1}{4} : 3\frac{3}{5};\) 6) \(5\frac{5}{6} : \frac{7}{18}.\)

79. Найдите частное:

1) \(9 : \frac{3}{7} = 9 \cdot \frac{7}{3} = \frac{9 \cdot 7}{3} = \frac{3 \cdot 7}{1} = 21\)

3) \(\frac{9}{32} : 18 = \frac{9}{32} \cdot \frac{1}{18} = \frac{9 \cdot 1}{32 \cdot 18} = \frac{1 \cdot 1}{32 \cdot 2} = \frac{1}{64}\)

5) \(2\frac{1}{4} : 3\frac{3}{5} = \frac{9}{4} : \frac{18}{5} = \frac{9}{4} \cdot \frac{5}{18} = \frac{9 \cdot 5}{4 \cdot 18} = \frac{1 \cdot 5}{4 \cdot 2} = \frac{5}{8}\)

6) \(5\frac{5}{6} : \frac{7}{18} = \frac{35}{6} : \frac{7}{18} = \frac{35}{6} \cdot \frac{18}{7} = \frac{35 \cdot 18}{6 \cdot 7} = \frac{5 \cdot 3}{1 \cdot 1} = 15\)

Ответ: 1) 21; 3) \(\frac{1}{64}\); 5) \(\frac{5}{8}\); 6) 15.